Seam-pounding machine



W. C. STEWART.

SEAM POUNDING MACHINE.

APPLICATION nuzn MAYH, 1916.

1 46,275. Pate t d uly 13, 1920.

um'rao STATES WILLIAM C. STEWART, OF SWAMPSCOTI,

PATENT OFFICE.

MASSACHUSETTS, .ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNITED SHOE MACHINERYCORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEIV JERSEY.

SEAM-POUNDING MACHINE.

Application filed May 11,

To all whom it may concern:

Be it known that I, VVTLLTAM C. STEWART, a subject of the King ofEngland, residing at Swampscott, in the county of Essex and State ofhflassachusetts, have invented certain Improvements in Seam-PoundingMachines, of which the following description, in connection with theaccompanying drawings, is a specification, like reference characters onthe drawings indicating like parts in the several figures.

This invention relates to machines for opcrating upon boots and shoesand is herein illustrated in connection with a machine for pounding theseams, edges, backstays, etc, of the uppers of boots and shoes.

The machine of the present invention is an improvement upon the scampressing machine shown in United States patent to Hayley, No. 643 155.When the patented machine is used on heavy stock a diliiculty issometimes experienced in introducing a piece of work between the hammerand anvil. For example it is in some cases desirable to pound the edgesof the tops of shoes as a final operation preparatory to packing them.To perform this operation rapidly without opening the shoe, the operatorholds the upper edges of the two quarters in alinement. pinching theupper as tightly as possible at the back seam, and presents the shoe.

thus held, to the hammer so that thetwo edges and the fold or crease atthe back seam are pounded at a single operation. The general object ofthe present invention is to facilitate operating upon bulky work such asthat which has been referred to above.

According to one feature of the present invention a novel supportingmember and an anvil having a common axis are provided with cooperatingcam surfaces such that relative angular movement of the member and theanvil about the axis will raise the anvil.

lVith this construction there is no difficulty in presenting a bulkypiece of work between the hammer and anvil. At the same time theeffective force of the blows of the hammer can be controlled by holdingthe anvil at a given position so as to provide for work of differentthickness.

This and other features of the invention Specification. of LettersPatent.

Patented July 13, 1920. 1916. Serial No. same. V

will be described in connection with an illustrative machine and pointedout in the appended claims. Referring now to the accompanying drawa,

The figure is a side elevation partly in section of a machine in whichthe present invention is embodied, a part of the frame having beenbroken away.

The frame 1, the oscillatory'arm 3, the hammer 5, its mounting in thearm, and the means for continuously oscillating the arm about the pivot7 are similar to the corre sponding elements of the machine of PatentNo. 643455 and will not be described further.

Threaded into a split socket in the frame underneath the hammer and heldin adjusted position by a pinch-bolt 9 is an anvil supportingmemberherein shown as a sleeve 11 having a head upon which are formeda-plurality of flat surfaces one of which is shown at 111 and aplurality of inclined surfaces 211 leading up to said flat surfaces. The under side of the anvil is provided with similar flat and inclined sothat angular movement of the anvil will raise it to the position shownor permit it to descend. The anvil comprises a head 13 having a stem 15which extends down through the sleeve 11, a cushioning washer 113 and acollar 213, the cam surfaces rer ferred to above being formed on theunder side of this last named member. A pin 17 connects the head 13, thewasher 113 and the collar 213 so as to cause them to turn together. Fastto the lower end of the stem a 15 is an arm 19 to the outer end of whichis pivoted a link 21 adapted to be actuated through a bell. crank lever23 by a treadle rod 25 and treadle (not shown). A. stop member 27adjustably clamped to the link 21 is connected to the frame of themachine by a tension spring 29, the spring tending at all times to holdthe member 27 against a bar 31 which forms part of the frame of themachine. ber 27 is such that the anvil is normally held in the raisedposition shown, with the flat surfaces on its under side in contact withthe flat surfaces on the anvil supporting member 11.

In operation, power is applied to the masurfaces as shown,

The position of the stop mem-.

chine to oscillate the hammer continuously.

' ters Patent of the United States is:

' anvil is held stationary in raised position When a bulky piece of worksuch as the two top edges of the quarters is to be operated upon, thetread'le is depressed, whereupon the anvil by its own weight, descendsas the inclined cam surfaces slide upon one another. This provides spacebetween the'anvil and hammer to permit presentation of the work,whereupon the treadle is released, 1

and the anvil'rises under the influence of the spring 29. In some casesthe anvil may rise at once to the position shown; in others the rise maynot be completed until enough b'l'ows" have been struck by the hammer toflatten the work somewhat. It has been found in practice that when. theinclined surfaces of the anvil and anvil support are in contact, aneffective pounding may be given to the work, and consequently that theeffective force of the blows of' the hammer may becontrolled-byholdingzthe treadle, and thereby the anvil, in different positions.Although the invention has been set forth in connection with aparticular machine, it should bcunderstood that the invention is notlimited in the scope of its application to the" particular machine whichhas. been shown and described.

Having thus describedmy invention what I" claim as new, and desire tosecure by Let- 1'; A machine'of the class described, having incombination, a hammer, an anvil supporting member rigid withthe frame ofthe machine, an anvil, said member and anvil having a common axisandbeing provided with cooperating cam surfaces such that relativeangular movement" of said anvil and member aboutsaid axis will raisesaid anvil or permit itgto be lowered, means for normally maintaining anangular relation between the anvil and member such that the and manuallycontrolled means for varying the angular relat1on at any time during thesponding to those of the supporting member, 1

means for normally holding said anvil and member insuch angular positionthat the fiatsurfaces on said anviland member are in engagement, andmanually controlled means for" producing relative angular movement between said anvil and'supporting member at any time during the operationof the machine to move said'surfaces out of engagement soas to permitsaidanvil'to be lo Wercd.

3; A machine of the class described, having in combination a hammer, ananvil supporting sleeve threaded in the frame of the machine and havingcam surfaces formed on its upper end,an anvil having corresponding camsurfaces formed on its under side and provided with a's'tem extendingthrough said sleeve, and means for turningsaid stem.

l. A machine of the class described, having in combination a hammer, ananvil sup- WILLIAM C. STEWART.

